Improved olefin selectivity during CO hydrogenation on hydrophilic Fe/HAP catalysts

被引：13
作者：
Guo, Xinyu [1 ]
Liu, Bo [1 ]
Gao, Xinhua [1 ]
He, Fugui [1 ,2 ,3 ]
Ma, Qingxiang [1 ]
Fan, Subing [1 ,2 ,3 ,4 ]
Zhao, Tian-sheng [1 ]
Tian, Jumei [4 ]
Reubroycharoen, Prasert [2 ,3 ]
Zhang, Jianli [1 ]
机构：
[1] Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Ningxia, Peoples R China
[2] Chulalongkorn Univ, Ctr Excellence Catalysis Bioenergy & Renewable Che, Bangkok 10330, Thailand
[3] Chulalongkorn Univ, Fac Sci, Dept Chem Technol, Bangkok 10330, Thailand
[4] Ningxia Acad Metrol & Qual Inspect, Natl Qual Supervis & Inspect Ctr Coal & Coal Chem, Dept Chem Technol, Yinchuan 750200, Peoples R China
来源：
CATALYSIS TODAY | 2023年 / 410卷
基金：
中国科学院西部之光基金;
关键词：
CO hydrogenation; Hydroxyapatite; Iron-supported catalyst; Secondary reaction; FISCHER-TROPSCH SYNTHESIS; IRON CATALYSTS; SECONDARY TRANSFORMATIONS; HYDROXYAPATITE CATALYSTS; CARBON-MONOXIDE; WATER; PERFORMANCE; ADSORPTION; SURFACES; PROMOTER;
D O I：
10.1016/j.cattod.2022.04.013
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The hydrophilic/hydrophobic properties of catalysts greatly influence product distribution by tuning the sec-ondary reactions during Fischer-Tropsch synthesis. Studies have confirmed that hydrophilic modification can inhibit secondary reactions. Herein, hydroxyapatite (HAP)-supported Fe catalysts (Fe/HAP) were prepared using an impregnation method. The effect of the catalyst surface properties on the product distribution in CO hy-drogenation was studied. The surface hydroxyl groups on Fe/HAP promoted the growth of carbon chains and improved olefin selectivity. The addition of Na as a promoter to Fe/HAP suppressed the formation of undesirable CH4, further improving the selectivity for light olefins and C5+ hydrocarbons. Compared with Fe2O3, Fe/HAP showed lower CH4 selectivity (15%) and higher C5+ selectivity (45%). Meanwhile, the Fe/HAP-Na catalysts with a higher selectivity of light olefins (with an O/P ratio reaching 4.51).
引用
收藏
页码：193 / 204
页数：12
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